Cooling bed



July 27, 1954 I E. T. PETERSON 2,634,605

COOLING BED Original Filed July 15, 1950 e Sheets-Sheet 1 July 27, 1954 E. T. PETERSON COOLING BED Original Filed July 15, 1950 6 Sheets-Sheet 2 INVENTOR rd I. Pei/arson.

win. z. 92%

July 27, 1954 E. 'r. PETERSON COOLING BED 6 Sheets-Sheet 3 Original Filed July 13, 1950 ATTORNEYS July 27, 1954 E. T. PETERSON COOLING BED 6 Sheets-Sheet 4 Original Filed July 13, 1950 GI Ha. I... Q;

ATTORNEYS.

y 1954 E. T. PETERSON 2,684,605

' COOLING BED Original Filed July 13, 1950 6 Sheets-Sheet 5 July 27, 1954 2,684,605

E. T. PETERSON COOLING BED e Sheets-Sheet 6 2/ 2a 7 t}! I A in- 63 6.?

ori inal Fil d Jply 13, 1950 'fAi ' TTORNEY-S.

Patented July 27, 1954- COOLING BED Edward T. Peterson, Reading, Pa., assignor to Birdsboro Steel Foundry and Machine Company, Birdsboro, Pa., a corporation of Pennsyl- Vania Continuation of abandoned application Serial'No.

173,657, July 13,, 1950. cember 14, 1951, Serial No. 261,833

Claims. 1

The present invention relates to cooling beds or hot beds of the type which support, manipulate and permissibly control the cooling of metallic products from a hot working rolling mill, such as bars, strip, shapes and other stock.

The present application is a continuation of U. S. application Serial No. 173,657, filed July 13,

1950, for cooling bed, and now abandoned.

A purpose of the invention is to cheapen the construction of cooling beds by eliminating the necessity of long linkages for operating the beds, while retaining the advantage of balance of the parts to minimize the amount of work which must be done by the drive.

A further purpose is to reduce the cost of installation of beds by eliminating the necessity for a deep pit foundation, and permit the bed mechanism to be located very close to the shuflie bars.

A further purpose is to reduce the number of bearings and other machined surfaces required in the construction of a cooling bed.

A further purpose is to accomplish the entire drive of the cooling bed from a single eccentric shaft which manipulates both sets of cooling bed bars.

Further purposes appear in the specification and in the claims.

In the drawings I have chosen to illustrate a few only of the numerous embodiments in which my invention may appear, selecting the forms shown from the standpoints of convenience in illustration, satisfactory operation and clear demonstration of the principles involved.

Figure 1 is a fragmentary partially diagrammatic vertical section of a cooling bed embodying the principles of the invention, the section being taken longitudinally of the carry over bars at a position corresponding with the line !i of Figure 5.

Figure 2 is a view corresponding to Figure 1 illustrating a bed similar to Figure 1, without the run-out mechanism and with a somewhat different approach table.

Figure 3 is a View corresponding to Figure 1 showing a bed arranged for pack annealing on the flat sides of the carry over bars.

Figure i is an enlarged section of Figures 1, 2 or 3 on the line 4 i.

Figure 5 is an enlarged section of Figures 1, 2 or 3 on the line 55.

Figure 6 is an enlarged section of Figures 1, 2 or 3 on the line 6-6.

Figure '7 is an enlarged section of Figures 1, 2 or 3 on the line 1-1.

Describing in illustration but not in limitation and referring to the drawings:

This application De- In the prior art, cooling beds of the character employed in connection with rolling mills especially for manufacture of steel bars, strip and shapes have commonly included two sets of coolings bed bars or carry over bars extending transversely to the direction of progression of the stock, and suitably notched or plain as desired, the sets of carry over bars being supported on very long linkages from rocker shafts which raise one set of carry over bars and lower another set of carry over bars. This prior art construction has the advantage of minimizing the amount of power required to operate the cooling bed, since one set of carry over bars and its supporting beams and driving mechanism balances the other set, and the main drive must merely move the weight of the stock on the bed and overcome the operating friction. Beds of this character have, however, been very expensive to build and install. A comparatively large number of shafts and bearings are needed, and the very long linkages which operate the sets of carry over bars are expensive to manufacture and costly to install. The installation is costly particularly because a very deep pit is required to allow for the necessary height of the drive.

By the present invention, the advantages of a balanced construction are obtained, 50 that the weight of one set of bars can compensate for the weight of the other set of bars, as far as the drive is concerned, but the long and costly linkages and the elaborate and expensive drive of the prior art bed are eliminated. The entire structure including the drive can be placed immediately beneath the carry over bars, thus economizing on material and workmanship and the depth of the pit and foundation are greatly reduced. The number of bearings and other machined surfaces is also reduced, thus further decreasing the cost.

The cooling bed of the invention comprises a first set of carry over bars 20 which extend lengthwise of the direction of motion of the stock or transversely to the length of the stock in side by side parallel relationship, and a second set of carry over bars 2! similar to the first, interspersed among the first in alternate relationship and adapted to move with respect to the first so that one set of carry over bars moves vertically and longitudinally with respect to the other set.

As well known in the art, the top surface of the carry over bars may be of any desired character depending on the ideas of the designer, some preferring smooth surfaces and some preferring notches of various characters, but for convenience in illustration the surface has been shown notched at 22 on all bars.

The first set of carry over bars 28 is supported, secured to and mounted at one end on beams 23 and at the other end on beams 2d, while the second set of carry over bars 2i is supported at one end by a beam 25 and at the other end by a beam 25. The beams run transversely to the carry over bars. The beams 23, 24, 25 and 23 are all substantially of the same length and end at the same position and, depending upon the desired width of the bed, any number ofcombinations or first and second carry over bar sets with their supporting beams23, 2t, 25 and 23 can be arranged side by side a shown in the drawings, particularly Figures 4 to 7.

The carry over bars of-each set and the beams of each set make a rigid frame structure which is suitably connected together as by bolting, riveting or welding.

The first set of carry over bars 26 are manipulated by motion of the supporting beams 23 and 26. Beam 23 is mounted on fixed pivots 2i supported in bearings 28 from bearing mounting it on foundation 3!. As best seen in Figure 4, the fixed pivots 2i are connected to opposite ends of each beam 23 so that several sets of first carry over bars are pivotally mounted on the same axis, one beside another.

As best seen in Figures 1, 2, 3 and 5, an eccentric shaft 32 built up of several elements desirably extends laterally of the entire cooling bed and is driven suitably by an electric motor (not shown). The shaft 32 is supported in bearings 33 mounted on the foundation 1% The shaft a2 is conveniently made up in sections, consisting of an eccentric or crank portion 35 adjacent the ends of the beams, carry ing suitable integral bearing portions 35 journalling in the bearings 33 and interconnected by desirably tubular shaft connections 36. The shaft connections 36 allow for theexpansions of the long eccentric shaft, by providing for relative longitudinal adjustment of position between externally splined collars 3i secured on the ends of the eccentric portions 3 5 beyond the bearing portions 35 by keys 3%, and having longitudinal splined grooves 38 which are engaged by suitable splines id on the inside of heads ll secured on the ends of the tubular shaft portions 35 by bolts 2. The heads have freedom for longitudinal motion at the ends Q3 and 3 3 with respect to the splined collars to permit adjustment for expansion and contraction.

The various eccentric portions 34 are provided with anti-friction bearing material and are surrounded by eccentric straps 48 which are separated at ll into two strap portions. Eccentric rollers 18 also surround the eccentrics and are freely movable around the eccentric axis independently of the motion of the straps.

At the positions corresponding to the ends of the beams, rockers 53 best seen in Figures 1, 2, 3, 5 and 6 extend generally horizontally beneath the carry over bars. The rockers are pivoted intermediate their ends and preferably near the middle on pivots 56 supported on bearings 52 from foundations One end 55, of each rocker fill extends beneath the corresponding eccentric and engages the bottom of eccentric roller 38 so that the motion of the rocker follows the motion of the eccentric. Since the Weight of one end of one set of carry over bars is bearing down on the other ends of the rockers, the end 5% of the rockers always maintains contact with the eccentric rollers.

The opposite end of each rockerbfl makes pivotal connection at 55 with an upwardly extending link 5%. The upper end of each link 5t makes pivotal connection at 5'! with one end of each beam 25. (Figure 6). The links 56 are adjustable in length for the purpose of aligning the top of the carry over bars by a nut 53 surrounding oppositely threaded bolt portions 60 (Figure 6) from the respective ends of each link 55.

The set of carry over bars 25 is manipulated by the eccentric straps it. The opposite ends of beams 25 rest on and are secured to the tops of the eccentric straps by bolts ti at one end of each beam (Figure 5) and by bolts 52 at the other end of each beam. The bolts 62 are provided with springs under the nuts and adequate clearance for resilient adjustment as the beams expand and contract.

The beams 26 at the opposite end of the set of carry over bars 2i carry at one end rotatable rollers 63 resting on track 54 on foundation 65 and at the other end carry rollers 63 which engage similar tracks (i i. Rollers 53 are flanged at 55 (Figure '7) so as to engage on both sides of the track and thus maintain their lateral position, whereas the roller at the opposite ends of beams 2 are without flanges so that they can move laterally of the tracks as well as longitudinally of the tracks to allow for expansion and contraction.

It has been found desirable to employ a new set of carry over bars every 15 feet laterally of the bed. It will be seen from Figures 4 to '7 that the beams do not run continuously beyond a single set, but at the ends of each set have provision for expansion and contraction either by movements axially of the pivots in Figure 4 or movements along the straps in Figure 5, movements axially of the pivots in Figure 6 or movements axially of the rollers in Figure '7.

The novel cooling bed of the invention may be used with any desired combination of run-in table, pack annealing bed, and run-out table, and different forms are shown in Figures 1, 2 and 3,

the differences forming no part of the present invention, but serving merely to illustrate that the cooling bed of the invention can be employed in these various combinations. In Figure l a runin table 6i of any well known character has individual driving motors 68, a lifting apron it and kick-off mechanism "1 l. The stock from the runin table is dropped into a straightening notch '52, from which it is removed by the notch bars.

In Figure 2 the approach table rolls 6? are riven in any suitable manner by line shaft 58 and the apron ill may conveniently be stationary, the other features being the same as in Figure 1. In Figure 3 a hand pack annealing bed '52 has been substituted for the nonpacking bed and a walkway #2 is provided for personnel. The plunger lift shown at W. permits discharging bars on to the cooling bed to form and maintain a pack.

The run-out table shown in Figures 1 and 3 and omitted in Figure 2 may be or any suitable form, here comprising shuihe bars it operated by an eccentric of well known character and raised or depressed as desired by lifting levers '35. Run-cut rolls are provided at it.

In operation, the carry over bar set has fixed pivotal mounting at one end at the beam and moves up and down at the opposite end at the beam 2d under the action of the eccentric, the eccentric roller and the remote end of the rocker acting through the link. The carry over bar set 25 moves up and down and back and forth at the also move back and forth as the rollers travel along the track to provide the horizontal motion required by the eccentric.

Thus one set of carry over bars are on a fixed pivot at one end and the other set of carry over bars 2! move back and forth and up and down at that end. At the opposite end, the set of carry over bars 2| pivot and move back and forth, while the other set of carry over bars 20 move up and down.

It will be evident that either set of carry over bars may be in advance of the others at a given eccentric position, and the following description is merely an example of one of the possible operative relationships.

The relative motion of the bars is always opposite. Thus in this example when the eccentric, moving clockwise in Figures 1 to 3, begins to move beam toward the right and down, the eccentric roller pushes down on end 54 of rocker 50 and moves the opposite end of the rocker and beam 2 up, so that while one end of carry over bar set 21 is moving down the opposite end of carry over bar set 25 is moving up. When the eccentric continues its clockwise motion in Figures 1 to 3 and begins to move to the left and up, beam 25 and the left end of carry over bar set 2i moves up and carry over bar set M moves to the left, while the eccentric roller moves up and allows end 5% of rocker 5% to move up carrying the opposite end, link 55 and beam 2s down.

Thus in effect the vertical motion at either end of the bed is largely confined to one set of carry over bars, the set of carry over bars 2! providing the vertical motion at the left end and the set of carry over bars 2!! providing the vertical motion at the right end. The horizontal motion is pro vided entirely by the set of carry over bars 2|.

It will be evident that by the invention the construction of cooling beds has been rendered simple, inexpensive and easy to install, while at the same time maintaining the balanced action, since when one end of one set of carry over bars is moving up the other end of the other set of carry over bars is moving down. The load on the eccentric is also balanced, since while one end of one set of carry over bars always presses down on the eccentric the load from the other end of the other set of carry over bars is always up.

The invention also results in simplifying the construction and reducing the mass to be moved because one end of each set of carry over bars pivots and is not required to move vertically in this mechanism, While in the prior art it has been customary to move both ends of both sets vertically.

In view of my invention and disclosure variations and modifications to meet individual whim or particular need will doubtless become evident to others skilled in the art to obtain all or part of the benefits of my invention without copying the structure shown, and I, therefore, claim all such insofar as they fall within the reasonabl spirit and scope of my claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a cooling bed, a plurality of sets of carry over bars extending generally horizontally in the same general direction, intermingled with one another and adapted to move relatively up and down and forward and backward, a pivotal mounting for one end of the first set of bars, a pivotal mounting for the opposite end of the second set of bars, an eccentric, an eccentric strap on the eccentric connected to the one end of the second set of bars, a rocker having pivotal mounting intermediate its ends operatively connected at one end to the eccentric and a link pivotally connecting the opposite end of the rocker with the opposite end of the first set of bars.

2. In a cooling bed, a plurality of sets of carry over bars extending generally horizontally in the same general direction, intermingled with one another and adapted to move relatively up and down and'forward and backward, a fixed pivotal mounting for one end of the first set of bars, a roller secured to the opposite end of the second set of bars, a track for the roller located beneath the roller, an eccentric, a strap on the eccentric connected to the one end of the second set of bars, a rocker having pivotal mounting intermediate its ends operatively connected at one end with the eccentric and a link pivotally connecting the opposite end of the rocker with the opposite end of the first set of bars.

3. In a cooling bed, a plurality of sets of carry over bars extending generally horizontally in the same general direction, intermingled with. one another and adapted to move relatively up and down and forward and backward, a beam extending transversely under each set of bars near each end thereof and supporting the bars of each set, a pivotal mounting for the beam under one end of the first set of bars. on a generally horizontal axis, a pivotal mounting for the beam under the op posite end of the second set of bars on a generally horizontal axis, an eccentric on a generallyhorizontal axis beneath the bars adjoining the end at which the first set of bars has pivotal mounting, a strap on the eccentric connected to the beam under the second. set of bars at the end opposite from the pivotal mounting of the second set, a rocker extending longitudinally beneath the bars having pivotal mounting intermediate its ends on a generally horizontal axis, operatively connected at one end with the eccentric and a link pivotally connecting the opposite end of the rocker with the beam under the end of the first set of bars cpposite to the end at which the first set of bars is pivotally mounted.

4. In a cooling bed, a plurality of sets of carry over bars extending generally horizontally in the same general direction, intermingled with one another and adapted to move relatively up and down and forward and backward, a beam extending transversely under each set of bars near each end thereof and supporting the bars of each set, a fixed pivotal mounting for the beam under one end of the first set of bars on a generally horizontal axis, a roller mounted on the beam under the end of the second set of bars opposite to the end at which the first set of bars is pivotally mounted, a track under and supporting the roller, an eccentric beneath the bars extending generally horizontally and located adjacent the end at which the first set of bars is pivotally mounted, an eccentric strap on the eccentric connected to the beam under the end of the second set of cars opposite to the end at which the roller is mounted, a rocker extending generally horizontally beneath the bars and longitudinally thereof, having generally horizontal pivotal mounting intermediate its ends and operatively connected at one end of the rocker with the eccentric, and a link pivotally connected to the end of the rocker op- 7 posite to that operatively connected with the eccentric, upwardly extending from the rocker and pivotally connected with the beam under the first set of bars at the end cppositeto the end at which the first set of bars is pivotally mounted.

5. In a cooling bed, a plurality of sets of carry over bars extending generally horizontally in the same general direction, inter l ingled with one another and adapted to move relatively up and down and forward and backward, beams extending transversely under each end of each set of bars and mounting the bars on the beams, pivots at the opposite ends of the beam under one end of the first set of bars, pivots at the opposite ends of the beam under the end of the second set of bars remote from the end at which the pivots are provided for the first set of bars, eccentrics extending generally transversely beneath the sets of bars adjacent the end at which the pivots are provided for the first set of bars, the eccentrics being located at positions adjoining the ends of the beams, eccentric straps on the eccentrics con nected to the ends of the beam which is under the second set of bars at the end of the bars adjoining that at which the first set is pivotally mounted, rockers extending longitudinally beneath the bars at positions oining the ends of th beams,

- each rocker having generally horizontal pivotal mounting intermediate its ends, each rocker being operatively connected at one end with one of the eccentrics, and links pivotally connected with the opposite ends of the respective rockers and pivotally connected with theends of the beam under the end'of the first set of bars remote from the end at which the first set-of bars is provided with pivotal mounting.

6. In a cooling bed, a plurality of sets of carry over bars extending generally horizontally in the same general "irection, intermingled with one another and adapted to move relatively up and down and forward and backward, beams extending transversely under each end of each set of bars and mounting the bars on the beams, fixed pivots for the opposite ends of the beam under one end of the first set of bars, rollers secured to the opposite ends or" the beam under the end of the second set of bars remote from the end at which the fixed p'vots are located, tracks beneath the rollers, an eccentric shaft having eccentrics lo cated at positions :3 rresponding to the'ends of the beams, the shaft extending horizontally beneath the bars and adjoining the end of the bars at which the fixed pivots are located, rockers extending longitudinally of the bars at positions corresponding to ends of the beams having horizontal pivotal mounting intermediate their ends, operatively connected at one: end of each rocker with one of the eccentrics and a link pivotally connecting the opposite end of each rocker with one end of the beam under the first set of bars adjoining the end at which the rollers are located.

7. In a cooling bed, a plurality of sets of carry over bars extending generally horizontally in the same general direction, intermingled with one another and adapted to move relativelyup and down and forward and backward, beams extending transversely under each end or" each set of bars and mounting the bars on the beams, a pivotal mountin for the ends of the beam under one end of the first set or" ca-rs, a pivotal mounting for the ends or" the beam-under the end of the second set of bars remote from the-pivotal mounting of the first set of bars, aneccentric shaft extending horizontally-beneath the bars adjoining-the end of the pivotal mounting for the first set1of-bars and having at positions corresponding to theends of the beams an eccentric, arr-eccentric strap on each eccentric connected to the ends of the beam under the second set of bars at the endv adjoining the pivotal mounting of the first set-oi bars, a roller on each eccentric, rockers extending longitudinally beneath the barsat positions corresponding to the ends-of thebeams, having pivotal mounting intermediate-their ends and each rocker at one end extending beneath and engaging one of the rollersand alink pivotally connecting the opposite end of each rocker with the end or" the beanibeneaththe first set of bars at the end of the first setof bars remote from the pivotal mounting of the first set.

8. In a cooling bed, a'plurality or" sets of carry over bars extending generally horizontally in the same general direction, intermingled with one another and adapted to move relatively up and down and forward and backward, beams extendingtransversely under each end of each set of bars and'mounting the bars on the beams, horizontal-fixed pivotal mounting for the opposite ends ofthebeam underone end of the first set of bars, track rollers mounted on opposite ends of the'beam'under the end of the second set of bars remote from the pivotal mounting of the first set of bars,nrails under and supporting the track rollers, an eccentric shaft extending horizontally under the bars at a position adjoining the pivotal mounting-oi the first set or" bars and having eccentrics at positions corresponding with the ends of the beams, an eccentric strap on each eccentric and connected to one or" the opposite ends of the beam under the end of the second set of bars adjoining the pivotal mounting of the first set of'bars, an eccentric roller on each eccentric, rockers extending longitudinally be- "neath the bars at positions corresponding with the ends'ofthe beams, having generally horizcntal pivotal mounting intermediate their ends and one end ofeach rocker extending below and engaging each eccentric roller on each eccentric, and links pivotally connecting the opposite ends of therockers respectively with the ends of the beam under-the first set of bars adjoining the first rollers.

- 9.. In a cooling'bed, a plurality of sets of carry over bars extending generally horizontally in the same general direction, intermingled with one another and adapted to-move relatively up and down and forward and backward, beams extending transverselyunder each end of each set of bars and mounting the bars on the beams, horizontal' fixed pivotal mounting for the opposite endsoi thebeam under one end of the first set of bars, track rollers mounted on opposite ends of the beam under the end of the second set of bars remote-from the pivotal mounting of the firstset of bars, rails under and supporting the track rollers, one track roller and its track having-fiange engagement which guides the track roller laterally and the other track roller and its track being free from flange engagement laterally movable, an eccentric shaft exteno ng horizontally under the bars a position oining the pivotal mounting of the first set of bars and having eccentrics at positions corresponding with the ends of the beams, an eccentric strap on each eccentric andconnected to one-of the opposite endsof the-beam under the end of the second setlof bars adjoining the pivotal mounting of the .first set oflbars an eccentric roller on eacheccentric, rockers extending longitudinally beneath the bars at positions corresponding with the ends of the beams, having generally horizontal pivotal mounting intermediate their ends and one end of each rocker extending below and engaging each eccentric roller on each eccentric, and links pivotally connecting the opposite ends of the rockers respectively with the ends of the beam under the first set of bars adjoining the track rollers.

10. In a cooling bed, a plurality of sets of carry over bars extending generally horizontally in the same general direction, intermingled with one another and adapted to move relatively up and down and forward and backward, a fixed pivotal mounting for one end of the first set of bars, a sliding pivotal mounting for the opposite end of the second set of bars, a common eccentric, a

rocker fixedly pivoted intermediate its ends and operatively connected at one end to the eccentric, means operatively connecting the eccentric with the end of the second set of bars remote from the pivotal mounting of the second set of bars and means operatively connecting the rocker at the end remote from the eccentric with the opposite end of the first set of bars.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 816,323 Hellstrom Mar. 27, 1906 1,117,615 Williams Nov. 17, 1914 FOREIGN PATENTS Number Country Date 256,508 Great Britain Aug. 12, 1926 

